I wouldn't specifically take the J&J vaccine for several reasons....

1) Fetal cells are used in its production. It actually creates the market for abortion that we saw on the video a few years ago with the PP doctor arranging the deal. This is an absolute deal breaker to me, and were COVID a far more virulent infection, I still would not get that vaccine. Same goes for the Atra Zeneca vaccine.
I am fine with the 2 shot vaccines as they do not have this direct connection.

2) It is less efficacious.

3) It will almost assuredly require a booster.

I tell you this just as an FYI in case you didn't know. Excellent points in your posts.